{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "571586821",
    "entityType": "User",
    "nonce": "0x73214c41000ac58eb06385ab35124e219069ce7a60b1de76f920b6c70fafc4ba",
    "signature": "0xe45700bea03d8a0e37d740785947c5c282115575e76479afd2b84fd6b76597d4602d161d7402d68b72910fb0563cab9e55d0de1cdf405fb4970f749f97e95d3f1c",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}